Cusick, who portrayed Desmond on the ABC island mystery series and also starred on Scandal's first season, has joined the cast of The Hundred. In the drama, nearly a century after a nuclear war has destroyed civilization, a spaceship sends 100 juvenile delinquents back to Earth to investigate the possibility of re-colonizing. Cusick will portray Kane, an ambitious officer aboard the spacecraft who has his eye on the top job.

The Hundred is based on the forthcoming Kass Morgan book of the same name. Jason Rothenberg will write and executive-produce with Leslie Morgenstein and Gina Girolamo.

Pellegrino, who played island-dweller Jacob and has since had roles on Revolutionand Supernatural, will co-star on The Tomorrow People. Based on the U.K. series of the same name, it's the story of several young people — played by Peyton List and Luke Mitchell, among them — from around the world who represent the next stage in human evolution, possessing special powers like teleportation and telepathy. They work together to defeat the forces of evil. Among that evil is Dr. Jedikiah Price (Pellegrino), who believes that the Tomorrow People are a danger to the human race.